A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Self-filling high-strength earth and rockfill dam water plugging material and preparation method thereof
The invention discloses a self-filling high-strength earth and rockfill dam water plugging material and a preparation method thereof. The preparation method specifically comprises the following steps: adding active strain particles and bentonite into an earth and rockfill material, mixing to obtain a premix, adding a gelling agent, and carrying out ball milling and mixing to obtain aggregate particles; the aggregate particles are placed on a stirrer to be stirred, an organic solution is sprayed to the aggregate particles for hydrophobic modification, modified aggregate is obtained and dried, the modified aggregate and urea are mixed and stirred, and the self-filling high-strength earth and rockfill dam water plugging material is obtained. According to the method, urease of bacteria and microorganisms of urea are used for inducing calcium carbonate precipitation MICP reaction to form calcium carbonate precipitation, the pore structure in traditional earth and stone materials is filled, the porosity and the pore size are reduced, the overall water seepage resistance of the dam body can be improved, meanwhile, the overall dam body is more compact due to the reduction of the porosity, and the dam body is better in water seepage resistance. And after the strength is improved, the external water pressure resistance is improved.
本发明公开了自填充高强度的土石坝堵水材料及制备方法，具体为：将活性菌种颗粒与膨润土加入到土石料中，混合，得到预混料，加入胶凝剂，球磨混合，得到骨料颗粒；将骨料颗粒放置在搅拌机上搅拌，并向骨料颗粒上喷洒有机溶液进行疏水改性，得到改性骨料，干燥，与尿素进行混合搅拌，得到自填充高强度的土石坝堵水材料。本发明的方法，利用细菌自身的脲酶与尿素的微生物诱导碳酸钙沉淀MICP反应形成碳酸钙沉淀，填补传统土石料中的孔隙结构，孔隙率与孔隙尺寸的减小，可以提高坝体的整体抗渗水性能，同时孔隙率的下降使得整体坝体更加致密，强度提升后抵抗外部水压的能力提升。
Self-filling high-strength earth and rockfill dam water plugging material and preparation method thereof
The invention discloses a self-filling high-strength earth and rockfill dam water plugging material and a preparation method thereof. The preparation method specifically comprises the following steps: adding active strain particles and bentonite into an earth and rockfill material, mixing to obtain a premix, adding a gelling agent, and carrying out ball milling and mixing to obtain aggregate particles; the aggregate particles are placed on a stirrer to be stirred, an organic solution is sprayed to the aggregate particles for hydrophobic modification, modified aggregate is obtained and dried, the modified aggregate and urea are mixed and stirred, and the self-filling high-strength earth and rockfill dam water plugging material is obtained. According to the method, urease of bacteria and microorganisms of urea are used for inducing calcium carbonate precipitation MICP reaction to form calcium carbonate precipitation, the pore structure in traditional earth and stone materials is filled, the porosity and the pore size are reduced, the overall water seepage resistance of the dam body can be improved, meanwhile, the overall dam body is more compact due to the reduction of the porosity, and the dam body is better in water seepage resistance. And after the strength is improved, the external water pressure resistance is improved.
本发明公开了自填充高强度的土石坝堵水材料及制备方法，具体为：将活性菌种颗粒与膨润土加入到土石料中，混合，得到预混料，加入胶凝剂，球磨混合，得到骨料颗粒；将骨料颗粒放置在搅拌机上搅拌，并向骨料颗粒上喷洒有机溶液进行疏水改性，得到改性骨料，干燥，与尿素进行混合搅拌，得到自填充高强度的土石坝堵水材料。本发明的方法，利用细菌自身的脲酶与尿素的微生物诱导碳酸钙沉淀MICP反应形成碳酸钙沉淀，填补传统土石料中的孔隙结构，孔隙率与孔隙尺寸的减小，可以提高坝体的整体抗渗水性能，同时孔隙率的下降使得整体坝体更加致密，强度提升后抵抗外部水压的能力提升。
Self-filling high-strength earth and rockfill dam water plugging material and preparation method thereof
自填充高强度的土石坝堵水材料及制备方法
TANG YUFEI (author) / WANG XUEJUAN (author) / LIANG QIAN (author) / XU ZENGGUANG (author) / CHEN LEI (author) / MENG QINGNAN (author) / ZHAO KANG (author)
2024-12-17
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
Mining high-water high-strength filling material and preparation method thereof
| European Patent Office | 2021
Concrete faced rockfill dam construction method for rapidly filling rockfill body
| European Patent Office | 2022
| British Library Conference Proceedings | 2006